Beginner Java Progrmming help..!

[Koka458]

Someone tell me where is the problem?

1st it will ask to type the 1st car name the enter the horsepower .....then 2nd car & horsepower.....

The problem is I cannot name car no. 2 .....only Horsepower....

Tell me where is the mistake......or it is a bug?

 

 import java.util.*;public class Cars{public static void main (String args[]){ Scanner CZ= new Scanner (System.in); System.out.println("Name Car 1");String First = CZ.nextLine();System.out.println("Horsepower");int Car1 = CZ.nextInt(); System.out.println("Name Car 2");String Second = CZ.nextLine();System.out.println("Horsepower");int Car2 = CZ.nextInt(); if (Car1>Car2){System.out.println(Car1 +"Is powerful");}else{System.out.println(Car2 +"Is powerful");  } }} 

Edited January 2, 2015 by alpenwasser
code tags :)

[sulairris]

i have not used java in some time but to my eyes your code looks good but keep in mind it is java it will do weird shit.

[Koka458]

i have not used java in some time but to my eyes your code looks good but keep in mind it is java it will do weird shit.

So...It is a bug then?

[rockking1379]

here you go

package tests;import java.util.*;public class koka {	public static void main (String args[])	{		Scanner CZ= new Scanner (System.in);			System.out.println("Name Car 1");		String First = CZ.nextLine();		System.out.println("Horsepower");		int Car1 = CZ.nextInt();				CZ.nextLine();				System.out.println("Name Car 2");		String Second = CZ.nextLine();		System.out.println("Horsepower");		int Car2 = CZ.nextInt();			if (Car1>Car2)		{			System.out.println(First +" Is powerful");		}		else		{			System.out.println(Second +" Is powerful");			}				CZ.close();	}}

change class name to suit your needs,

 

here is an article i used to understand what was happening.

http://stackoverflow.com/questions/8873351/reading-strings-next-and-nextline-java

look specifically at answer 1

 

also, use the code button

[Koka458]

here you go

package tests;import java.util.*;public class koka {	public static void main (String args[])	{		Scanner CZ= new Scanner (System.in);			System.out.println("Name Car 1");		String First = CZ.nextLine();		System.out.println("Horsepower");		int Car1 = CZ.nextInt();				CZ.nextLine();				System.out.println("Name Car 2");		String Second = CZ.nextLine();		System.out.println("Horsepower");		int Car2 = CZ.nextInt();			if (Car1>Car2)		{			System.out.println(First +" Is powerful");		}		else		{			System.out.println(Second +" Is powerful");			}				CZ.close();	}}

change class name to suit your needs,

 

here is an article i used to understand what was happening.

http://stackoverflow.com/questions/8873351/reading-strings-next-and-nextline-java

look specifically at answer 1

 

also, use the code button

Thanks, it worked..!!

So where is the problem in my program?

[rockking1379]

Thanks, it worked..!!

So where is the problem in my program?

if you read the answer on the stackoverflow post, it explains what happens.

[skullbringer]

here you go

package tests;import java.util.*;public class koka {	public static void main (String args[])	{		Scanner CZ= new Scanner (System.in);			System.out.println("Name Car 1");		String First = CZ.nextLine();		System.out.println("Horsepower");		int Car1 = CZ.nextInt();				CZ.nextLine();				System.out.println("Name Car 2");		String Second = CZ.nextLine();		System.out.println("Horsepower");		int Car2 = CZ.nextInt();			if (Car1>Car2)		{			System.out.println(First +" Is powerful");		}		else		{			System.out.println(Second +" Is powerful");			}				CZ.close();	}}

change class name to suit your needs,

 

here is an article i used to understand what was happening.

http://stackoverflow.com/questions/8873351/reading-strings-next-and-nextline-java

look specifically at answer 1

 

also, use the code button

lol, thats some crazy shit

[Koka458]

if you read the answer on the stackoverflow post, it explains what happens.

Hmm.....Thanks for the help..!! 

[rockking1379]

Thanks, it worked..!!

So where is the problem in my program?

but to boil it down, think of the input stream the scanner object is using as the line at a grocery store. so you go to get the first car name, and because you are reading a line it will read the entire input stream. including the new line "\n", which is used to denote enter. works great. but then the next value coming in was a number. so we mash in some numbers but still have to add that "\n" to the end of the stream to denote the end of the line. well when you read integers in it only takes the numbers out of the line. leaving the "\n" endline character still there. so then the next time you call "nextLine" well the new line character is actually still in the input stream. so it just processes immediately. so the workaround trick is to just call nextLine between nextInt and when you want to get the name of the next car

[rockking1379]

Hmm.....Thanks for the help..!! 

please mark as answered